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21 votes
If 4x- 7 = 2x, then 2x = ?

2 Answers

3 votes

If
4x-7=2x, then
2x=7.

Hope this helps.

User Scholtz
by
4.6k points
7 votes

Answer:

7

Explanation:

We solve for x first.

So: 4x - 7 = 2x

Subtract 2x from both sides: 4x - 2x - 7 = 2x - 2x

2x - 7 = 0

Add 7 to both sides: 2x - 7 + 7 = 0 + 7

2x = 7

Divide by 2:
(2x)/(2) =
(7)/(2)

x =
(7)/(2)

Now, we substitute x for
(7)/(2) like this:

2 (
(7)/(2)) = 7

User Csaba Farkas
by
5.7k points
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